Brush Research GBD40024 FLEX-HONE, 4 (101mm) Diameter, 240 Grit, Silicon Carbide Abrasive (Pack of 1)

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$49.37

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100 Ratings
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Reviews
  • Nunya

    > 3 day

    I was worried about the size as the 3.78 inch bore of the 5.3 is on the edge of the range listed for this product. It did a great job and I was very happy with the results. I used motor oil as lubricant and did about 10 in out passes. Make sure to go slow on rpm and fast on the in out to try to get the 45 degree cross hatch.

  • Chris

    > 3 day

    This honing brush is easy to use, is high quality and worked just as described. You do need to ensure you move at a quick and consistent pace to get a good cross hatch. I recommend this tool for anyone looking to refresh and engine.

  • Thomas D.

    > 3 day

    Did a good job on a Kawasaki lawn mower engine that had issues from water in the cylinder. Not cheap but you get what you pay for.

  • Richard bendel

    > 3 day

    these flex zones will give you the best results ever

  • Michael H.

    > 3 day

    Works great, just remember to use oil or it gets aggressive.

  • Ken Beck

    > 3 day

    Worked as expected

  • SPBoy

    > 3 day

    Works great! Not as deep cutting as honing tool with stones. Used this as a starter and finisher. Leaves a great finish! I used this on my 2.5L Subaru

  • Jon Whitehead

    > 3 day

    It has a large surface area for big or small jobs. Great looking quality. Balls did not easily chip in shipping as some hones do.

  • Gerald Blair

    > 3 day

    Technique for a ball hone is easily found online but it would have been reassuring to have the instructions directly from manufacturer. It worked as I expected and should last a long time.

  • Michael Patrick

    > 3 day

    Great part when doing cylinders on refresh build. Thanks

The Flex-Hone® tool was originally created by Brush Research Manufacturing to deglaze cylinder walls in automotive applications. Brush Research embraced the benefits of a plateau finish and pioneered the concept of plateau honing culminating in the introduction of the Flex-Hone tool in 1972. The Flex-Hone has gained many nicknames over the years and including ball hone, ball style hone, flexihone, dingleberry hone, bead brush, glaze breaker and glaze buster. Flexible honing with the Flex-Hone tool produces an oil holding cross hatch pattern and a true plateau finish free of cut, torn and folded metal. Any type or size of cylinder can benefit from the Flex-Hone®. These abrasive bead style brushes are produced in standard diameters from 4mm to 36 inches. Nine abrasive types are offered including silicon carbide, aluminum oxide, boron carbide and diamond allowing the tool to be tailored to finish any base material. A choice of 11 different grit selections are available for precise control of finish parameters. The elimination of peaks results in rapid ring seating, better oil control, reduced seepage in hydraulic and pneumatic applications and provides better seal performance and longer seal life. Successful applications include firearm chambers, shotgun barrels, musical instruments, combustion chambers, air compressors, pumps, valve bodies, valve guides, brake cylinders, wheel cylinders and the list goes on and on. Flex-Hone® tools are also very effective for deburring cross drilled holes, port radiusing and edge blending. Because of its unique construction, the Flex-Hone is self-centering, self-aligning, and self-compensating for wear so it does not require an elaborate set-up or special training. Deburring can be effectively automated and combined in the machining process to allow a complete cylinder finish in one operation or it can be employed as a secondary operation with equal results.

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